The discussion explained that the prefix M/s or Messrs is commonly used for business entities, including proprietorship firms. Its use on rubber stamps is optional, but it is generally used in formal letters and business correspondence.
08 March 2018
M/s or Messers is plural for Mr. or when you refer group of people with a name. Hence, M/s. is used with all entities like companies, partnership firm, Association of persons because these entities are group of persons therefore we have to use plural word of Mr. which is M/s. or Messers. Regarding your query, can you use M/s. with your firms name on Rubber Stamp, answer is its optional, generally on rubber stamp, the word M/s. is not written. However, while writing any letter or any correspondence wherein the name of firm/company is required to be mentioned, you may prefix M/s. before the name of the company/firm.